The Department of Earth Science (formerly the Department of Geological Sciences) at UC Santa Barbara offers BA, BS, MS and PhD degrees. The faculty research interests include areas such as tectonics, plate tectonics, geophysics, igneous, sedimentary, and metamorphic petrology, mineralogy, geochronology, marine geology, geochemistry, isotope geochemistry, biogeochemistry, paleobiology, paleo-oceanography, and hydrology.